Specifications

External Accessories

Display Module

The Display Module provides features for allowing the user to

locally monitor the phase currents.The switch to set and select

the display is accessible to the user through a hole in the trans-

parent cover of the trip unit.

Maximum Current Demand

This feature provides a display of the maximum current demand

since the unit was last reset.The unit is reset by depressing

both the phase and ground fault test pushbuttons simultane-

ously. Phase and ground fault pushbuttons are located on the

SB Electronic Trip Unit in the integral testing section.

Present Current Demand

This feature provides a display of the present current demands.

The present current demands are calculated, averaged over

thirty (30) minute intervals.The user may display the most

recent stored values by setting the switch to the present

demand position for the 30-minute interval.

Local Monitor Relay

This feature provides a local alarm display and an output signal

for an external alarm when the average of the phase currents

exceeds the alarm set point.The display automatically resets

itself when the alarm condition ceases.The output alarm signal

is a 5V DC level.The signal may be used to display an alarm on

a remote indication panel or by using an internal Systems

Breaker Modular Relay (SBDMR) or (SBBADMR). Alarm set

point may be set to 60, 70, 80, 90, or 100% of the continuous

current setting.

Local Current Meter

This feature provides a local display of the present 3-phase

currents.The user may display the current value by setting the

switch to the I

,orI

positions.

Before installing the display module, the breaker should be

placed in the open position.

The display is a plug-in unit.To install the module:

1. Remove the trip unit’s transparent cover.

2. Remove cover from the display module receptacle.

3. Insert the module into the receptacle.

4. Replace and seal the transparent cover.